Radiographic inspection flaw detection auxiliary device for densely-arranged tubes of through-flow boiler

Abstract

The utility model relates to the technical field of boiler detection equipment, in particular to a cross-flow boiler close-packed tube radiographic inspection auxiliary device which comprises two suspension assemblies, a detachable connecting rod is arranged between the two suspension assemblies, each suspension assembly comprises a rectangular fixing sleeve with the top being of an opening structure, and a rectangular lifting column is arranged in each rectangular fixing sleeve. The middle of the bottom of the inner wall of each rectangular fixing sleeve is rotationally connected with a lead screw, each rectangular lifting column is in threaded connection with the outer side of the corresponding lead screw, the top of each rectangular lifting column is rotationally connected with a hook, the front side of each rectangular lifting column is in threaded connection with a first fastening bolt, and detachable L-shaped supporting plates are arranged on the front sides of the two rectangular fixing sleeves correspondingly. The two L-shaped supporting plates are jointly connected with a detachable platform plate. According to the X-ray detection flaw detection auxiliary device for the through-flow boiler densely-arranged pipes, adjustment of any height is achieved, the X-ray detection flaw detection auxiliary device can adapt to configuration of the boiler densely-arranged pipes with different heights, the hook can rotate in the circular groove, and flexible adjustment of the angle is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler detection equipment, in particular to an auxiliary device for radiographic inspection of the closely arranged tubes of a once-through boiler. Background Art

[0002] A once-through boiler is a device that uses water as the working medium and conducts energy conversion through pipelines and steam generators, and is widely used in industries such as electric power, chemical engineering, and metallurgy. The design of this type of boiler has the advantages of high thermal efficiency, small volume, and strong adaptability. However, the structure of its closely arranged tubes is complex, making it face many challenges in the safety detection of pipelines during operation. In the operation and maintenance of boilers, boiler non-destructive testing technology is particularly important. Non-destructive testing can accurately evaluate the integrity and health status of boiler components without damaging the boiler structure. For once-through boilers, the commonly used non-destructive testing method is to use an X-ray flaw detector for flaw detection operations. X-ray flaw detector detection has become an effective detection means because it can clearly show internal defects such as cracks and pores. In the prior art, a combination of a hanging support rod and a main support rod of a bracket is used to detect the closely arranged tubes. Specifically, a hook is provided at one end of the hanging support rod, and the other end of the hanging support rod is fixedly connected to the main support rod of the bracket. The hanging support rod and the main support rod of the bracket with appropriate sizes are made according to the size of the closely arranged tubes. The hook is hung on the fin between the closely arranged tubes, and the X-ray flaw detector is arranged on the main support rod of the bracket, thereby completing the flaw detection operation of the closely arranged tubes.

[0003] The patent with the publication number CN218208548U discloses a support for X-ray flaw detection of boiler welds, which relates to the technical field of boiler installation and maintenance, and includes: a support rod; two support rods are provided in total; a limit bottom plate is fixedly connected to the bottom end surface of each of the two support rods; both limit bottom plates are circular plate-shaped structures; a rotating block is fixedly connected to the top end surface of each of the two support rods; after the detection support is used, the staff can move the X-ray flaw detector to the first platform plate, reverse-rotate the fixing screw to screw the fixing screw out of the fixing threaded hole, retract the connecting platform plate, and pull the mounting frame to fold the mounting frame. During the folding process of the mounting frame, the stretching support frame will also be squeezed and folded. The folded detection support greatly reduces the occupied area, solving the problem that the detection support will occupy a large area when it continues to be hung on the scaffolding or the fin between the closely arranged tubes of the boiler after use, which affects the work of the staff.

[0004] In the specific use process of the above-mentioned prior art, when adjusting the hook, it is necessary to cooperate with the locking insert block and the locking jack. In this way, there is a problem that the rotation angle of the hook is fixed each time and cannot be adjusted arbitrarily, which has certain limitations. Similarly, for the height adjustment of the support rod and the mounting bracket, it is necessary to cooperate with the detent ball and the limit through hole, which also causes the height cannot be adjusted arbitrarily and there is inconvenience in use. In view of this, we propose an auxiliary device for radiographic inspection of the closely spaced tubes of a cross-flow boiler. Content of the Utility Model

[0005] The purpose of the present utility model is to provide an auxiliary device for radiographic inspection of the closely spaced tubes of a cross-flow boiler to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present utility model provides the following technical solutions:

[0007] The auxiliary device for radiographic inspection of the closely spaced tubes of a cross-flow boiler includes two suspension components arranged symmetrically left and right, which are the main structures for fixing and supporting the whole device and can be firmly attached to the closely spaced tubes of the boiler for inspection operations. A detachable connecting rod is provided between the two suspension components. The suspension component includes a rectangular fixing sleeve with an open top structure for accommodating and supporting a rectangular lifting column to provide the ability to adjust in the vertical direction. A vertically adjustable rectangular lifting column is provided in the rectangular fixing sleeve. The rectangular lifting column cooperates with the rectangular fixing sleeve to realize the lifting of the inspection device in the vertical direction to adapt to the closely spaced tubes of boilers with different heights. The middle of the bottom of the inner wall of the rectangular fixing sleeve is rotatably connected with a lead screw. The rectangular lifting column is threadedly connected to the outside of the lead screw. The bottom end of the lead screw passes through the bottom of the inner wall of the rectangular fixing sleeve and is fixedly connected with a knob. The knob facilitates the staff to rotate the lead screw. The lead screw drives the rectangular lifting column to move up and down and can be adjusted arbitrarily in height for easy use;

[0008] The top of the rectangular lifting column is rotatably connected with a hook for hanging and fixing on the fins between the closely spaced tubes of the boiler to ensure the positioning and stability of the device. A first fastening bolt is threadedly connected to the front side of the rectangular lifting column near the top. The threaded end of the first fastening bolt abuts against the outer wall of the hook. The relative positions of the hook and the rectangular lifting column are fixed by the first fastening bolt, so as to facilitate the staff to adjust the hanging angle of the hook;

[0009] Detachable L-shaped support plates are provided on the front sides of the two rectangular fixing sleeves for carrying a platform plate. The two L-shaped support plates are jointly connected with a detachable platform plate, which serves as a carrying platform for the inspection equipment.

[0010] Preferably, a circular groove is formed at the top of the rectangular lifting column, and the bottom end of the hook is rotatably connected to the circular groove, providing a rotational connection fixing point for the hook so that it can flexibly adjust the angle.

[0011] Preferably, an annular anti-detachment groove is formed on the outer wall of the hook near the bottom end, and the threaded end of the first fastening bolt is pressed into the annular anti-detachment groove. The annular anti-detachment groove cooperates with the first fastening bolt to prevent the hook from accidentally falling off.

[0012] Preferably, internal threaded fixing tubes are provided on the opposite sides of the two rectangular fixing sleeves, and threaded posts are provided at the left and right ends of the connecting rod. The threaded posts are threadedly connected to the internal threaded fixing tubes, facilitating the disassembly and assembly of the connecting rod and the rectangular fixing sleeves.

[0013] Preferably, a U-shaped positioning block is provided at the front side of the rectangular fixing sleeve near the top, and the vertical plate of the L-shaped support plate is inserted into the inner side of the U-shaped positioning block for positioning and fixing the L-shaped support plate to ensure its correct position in the device.

[0014] Preferably, a support block is provided at the front side of the rectangular fixing sleeve near the bottom, and a reinforcing inclined plate is provided at the bottom of the horizontal plate of the L-shaped support plate near the rear end. The bottom of the reinforcing inclined plate abuts against the top of the support block, providing bottom support for the L-shaped support plate and increasing its stability and load-bearing capacity.

[0015] Preferably, frame-shaped connection blocks are provided at the bottom of the platform plate near the left and right ends, and the frame-shaped connection blocks are sleeved on the outer sides of the horizontal plates of the L-shaped support plates for fixing the platform plate on the outer sides of the L-shaped support plates to ensure its stable connection.

[0016] Preferably, a second fastening bolt is threadedly connected to the middle of the bottom of the frame-shaped connection block, and the threaded end of the second fastening bolt abuts against the bottom of the horizontal plate of the L-shaped support plate for fastening the frame-shaped connection block on the horizontal plate of the L-shaped support plate to prevent the platform plate from moving and also facilitating the disassembly and assembly of the platform plate and the L-shaped support plate.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. For this cross-flow boiler finned tube ray detection flaw detection auxiliary device, the rectangular lifting column is driven to move up and down by rotating the knob to adjust the screw rod, realizing the adjustment of any height. In this way, it can adapt to the configurations of boiler finned tubes at different heights and improve the flexibility of the detection operation.

[0019] 2. The ray detection flaw detection auxiliary device for the once-through boiler's closely arranged tubes. The hook can rotate within the circular groove to achieve flexible angle adjustment, overcoming the limitation of the fixed hook angle in the prior art and facilitating adaptation to the requirements of different detection environments. The cooperation between the annular anti-disengagement groove and the first fastening bolt ensures that the hook will not accidentally fall off during use, thereby enhancing the safety and reliability of the device.

[0020] 3. The ray detection flaw detection auxiliary device for the once-through boiler's closely arranged tubes. Through the positioning and support of the L-shaped support plate by the U-shaped positioning block and the support block, the reinforcing inclined plate further enhances the structural stability, ensuring that the detection equipment remains stable during use.

[0021] 4. The ray detection flaw detection auxiliary device for the once-through boiler's closely arranged tubes. Utilizing the connection design of the internally threaded fixing tube and the threaded column, the connecting rod can be quickly disassembled and assembled, making the connection between the suspension components more flexible and facilitating the transportation and installation of the equipment.

[0022] 5. The ray detection flaw detection auxiliary device for the once-through boiler's closely arranged tubes. Through the design of the frame-shaped connection block and the second fastening bolt, the platform plate can be firmly fixed on the L-shaped support plate, providing a solid support platform for the detection equipment and ensuring stable support during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall structural schematic diagram of the present utility model;

[0024] Figure 2 is the assembly structural schematic diagram of the suspension component and the connecting rod in the present utility model;

[0025] Figure 3 is the partial structural schematic diagram of the suspension component in the present utility model;

[0026] Figure 4 is the assembly structural schematic diagram of the L-shaped support plate and the platform plate in the present utility model;

[0027] In the figure: 1. Suspension component; 10. Rectangular fixing sleeve; 11. Rectangular lifting column; 110. Circular groove; 12. Hook; 120. Annular anti-disengagement groove; 13. Lead screw; 14. Knob; 15. First fastening bolt; 16. U-shaped positioning block; 17. Support block; 18. Internally threaded fixing tube; 2. Connecting rod; 20. Threaded column; 3. L-shaped support plate; 30. Reinforcing inclined plate; 4. Platform plate; 40. Frame-shaped connection block; 41. Second fastening bolt. DETAILED DESCRIPTION OF THE INVENTION

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0030] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0031] A ray detection and flaw detection auxiliary device for the closely arranged tubes of a cross-flow boiler, comprising two suspension assemblies 1 arranged symmetrically left and right, which are used to fix and support the main structure of the whole device and can be stably attached to the closely arranged tubes of the boiler for detection operations. A detachable connecting rod 2 is arranged between the two suspension assemblies 1. The suspension assembly 1 includes a rectangular fixing sleeve 10 with an open top structure, which is used to accommodate and support a rectangular lifting column 11 and provide the ability to adjust in the vertical direction. A vertically adjustable rectangular lifting column 11 is arranged inside the rectangular fixing sleeve 10. The rectangular lifting column 11 cooperates with the rectangular fixing sleeve 10 to realize the lifting of the detection device in the vertical direction to adapt to the settings of the closely arranged tubes of boilers with different heights. A lead screw 13 is rotatably connected to the middle of the bottom of the inner wall of the rectangular fixing sleeve 10. The rectangular lifting column 11 is threadedly connected to the outside of the lead screw 13. The bottom end of the lead screw 13 passes through the bottom of the inner wall of the rectangular fixing sleeve 10 and is fixedly connected to a knob 14. The knob 14 facilitates the staff to rotate the lead screw 13, and the lead screw 13 drives the rectangular lifting column 11 to move up and down, and the height can be adjusted arbitrarily for easy use;

[0032] A hook 12 is rotatably connected to the top of the rectangular lifting column 11 for hanging and fixing on the fins between the closely arranged tubes of the boiler to ensure the positioning and stability of the device. A first fastening bolt 15 is threadedly connected to the front side of the rectangular lifting column 11 and near the top. The threaded end of the first fastening bolt 15 abuts against the outer wall of the hook 12. The relative positions of the hook 12 and the rectangular lifting column 11 are fixed by the first fastening bolt 15, so as to facilitate the staff to adjust the hanging angle of the hook 12.

[0033] On the front sides of both rectangular fixing sleeves 10, there are detachably arranged L-shaped support plates 3 for carrying the platform plate 4. The two L-shaped support plates 3 are jointly connected with a detachably arranged platform plate 4, serving as the carrying platform for the detection device.

[0034] In this embodiment, a circular groove 110 is formed at the top of the rectangular lifting column 11. The bottom end of the hook 12 is rotatably connected within the circular groove 110, providing a rotational connection and fixing point for the hook 12, enabling it to flexibly adjust the angle.

[0035] Specifically, an annular anti-detachment groove 120 is formed at a position on the outer wall of the hook 12 near the bottom end. The threaded end of the first fastening bolt 15 is pressed within the annular anti-detachment groove 120. The annular anti-detachment groove 120 cooperates with the first fastening bolt 15 to prevent the hook 12 from accidentally falling off.

[0036] Furthermore, internal thread fixing tubes 18 are provided on the opposite sides of both rectangular fixing sleeves 10. Threaded posts 20 are provided at both the left and right ends of the connecting rod 2. The threaded posts 20 are threadedly connected within the internal thread fixing tubes 18, facilitating the disassembly and assembly of the connecting rod 2 and the rectangular fixing sleeve 10.

[0037] Furthermore, a U-shaped positioning block 16 is provided at a position on the front side of the rectangular fixing sleeve 10 near the top. The vertical plate of the L-shaped support plate 3 is inserted into the inner side of the U-shaped positioning block 16 for positioning and fixing the L-shaped support plate 3 to ensure its correct position in the device.

[0038] Furthermore, a support block 17 is provided at a position on the front side of the rectangular fixing sleeve 10 near the bottom. At a position on the bottom of the horizontal plate of the L-shaped support plate 3 near the rear end, there is a reinforcing inclined plate 30. The bottom of the reinforcing inclined plate 30 abuts against the top of the support block 17, providing bottom support for the L-shaped support plate 3 and increasing its stability and load-bearing capacity.

[0039] Furthermore, frame-shaped connection blocks 40 are provided at positions on the bottom of the platform plate 4 near both the left and right ends. The frame-shaped connection blocks 40 are sleeved on the outer sides of the horizontal plates of the L-shaped support plates 3 for fixing the platform plate 4 on the outer sides of the L-shaped support plates 3 to ensure its firm connection.

[0040] Furthermore, a second fastening bolt 41 is threadedly connected to the middle of the bottom of the frame-shaped connection block 40. The threaded end of the second fastening bolt 41 abuts against the bottom of the horizontal plate of the L-shaped support plate 3 for fastening the frame-shaped connection block 40 on the horizontal plate of the L-shaped support plate 3, preventing the platform plate 4 from moving and also facilitating the disassembly and assembly of the platform plate 4 and the L-shaped support plate 3.

[0041] When the cross-flow boiler finned tube ray detection flaw detection auxiliary device of this embodiment is in use, first, symmetrically arrange two suspension assemblies 1 on the finned tubes of the boiler. Rotate the lead screw 13 using the knob 14 to adjust the height of the rectangular lifting column 11 to meet the specific height requirements of the finned tubes. Rotate the hook 12 to an appropriate angle so that it can be firmly hooked on the fins between the finned tubes. Adjust the position of the first fastening bolt 15 so that its threaded end abuts against the outer wall of the hook 12 to fix the position of the hook 12 and ensure the positioning and stability of the device. On the front side of the two suspension assemblies 1, install a detachable L-shaped support plate 3. Insert the vertical plate of the L-shaped support plate 3 into the inner side of the U-shaped positioning block 16 for positioning and fixing the L-shaped support plate 3. The bottom of the reinforcing inclined plate 30 abuts against the top of the support block 17 to provide bottom support for the L-shaped support plate 3 and increase its stability and load-bearing capacity. Then fix the platform plate 4 on the L-shaped support plate 3 and ensure the stability of the platform plate 4 through the frame-shaped connection block 40 and the second fastening bolt 41 to provide a loading platform for the detection equipment. During the detection process, the position of the platform plate 4 can be adjusted as needed to ensure the stability of the detection equipment. After ensuring that the entire device is firmly connected, place detection equipment such as an X-ray flaw detector on the platform plate 4, adjust the angle and position of the equipment to ensure that the internal defects of the boiler finned tubes can be accurately detected. Through the above steps, this device can effectively assist the operator in performing ray detection flaw detection operations on the boiler finned tubes, improving the accuracy and safety of the detection. The flexibility and stability of the entire device design ensure the convenience and reliability of the equipment during installation and use.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Auxiliary device for radiographic inspection of closely arranged tubes in a once-through boiler, comprising two suspension assemblies (1) arranged symmetrically left and right, characterized in that: A detachable connecting rod (2) is provided between the two suspension components (1). The suspension component (1) includes a rectangular fixed sleeve (10) with an open top structure. A rectangular lifting column (11) that can be adjusted up and down is provided inside the rectangular fixed sleeve (10). In the middle of the bottom of the inner wall of the rectangular fixed sleeve (10), a lead screw (13) is rotatably connected. The rectangular lifting column (11) is threadedly connected to the outside of the lead screw (13). The bottom end of the lead screw (13) passes through the bottom of the inner wall of the rectangular fixed sleeve (10) and is fixedly connected to a knob (14). The top of the rectangular lifting column (11) is rotatably connected to a hook (12). At a position near the top on the front side of the rectangular lifting column (11), a first fastening bolt (15) is threadedly connected. The threaded end of the first fastening bolt (15) abuts against the outer wall of the hook (12). On the front sides of the two rectangular fixed sleeves (10), detachable L-shaped support plates (3) are provided. The two L-shaped support plates (3) are jointly connected to a detachable platform plate (4).

2. The ray detection flaw detection auxiliary device for the closely arranged tubes of the once-through boiler according to claim 1, wherein: A circular groove (110) is formed at the top of the rectangular lifting column (11). The bottom end of the hook (12) is rotatably connected inside the circular groove (110).

3. The in-line boiler closely arranged tube ray detection flaw detection auxiliary device according to claim 1, characterized in that: An annular anti-detachment groove (120) is formed at a position near the bottom end on the outer wall of the hook (12). The threaded end of the first fastening bolt (15) presses inside the annular anti-detachment groove (120).

4. The auxiliary device for radiographic inspection of the closely arranged tubes of a once-through boiler according to claim 1, characterized in that: Inner threaded fixing tubes (18) are provided on the opposite sides of the two rectangular fixed sleeves (10). Threaded columns (20) are provided at the left and right ends of the connecting rod (2). The threaded columns (20) are threadedly connected inside the inner threaded fixing tubes (18).

5. The auxiliary device for radiographic inspection of closely arranged tubes of a once-through boiler according to claim 1, wherein: A U-shaped positioning block (16) is provided at a position near the top on the front side of the rectangular fixed sleeve (10). The vertical plate of the L-shaped support plate (3) is inserted inside the U-shaped positioning block (16).

6. The ray detection flaw detection auxiliary device for the closely arranged tubes of the once-through boiler according to claim 1, wherein: A support block (17) is provided at a position near the bottom on the front side of the rectangular fixed sleeve (10). At a position near the rear end on the bottom of the horizontal plate of the L-shaped support plate (3), a reinforcing inclined plate (30) is provided. The bottom of the reinforcing inclined plate (30) abuts against the top of the support block (17).

7. The ray detection flaw detection auxiliary device for the closely arranged tubes of a once-through boiler according to claim 1, characterized in that: Frame-shaped connecting blocks (40) are provided at positions near the left and right ends on the bottom of the platform plate (4). The frame-shaped connecting blocks (40) are sleeved outside the horizontal plates of the L-shaped support plates (3).

8. The in-line boiler closely arranged tube ray detection flaw detection auxiliary device according to claim 7, characterized in that: A second fastening bolt (41) is threadedly connected to the middle of the bottom of the frame-shaped connecting block (40). The threaded end of the second fastening bolt (41) abuts against the bottom of the horizontal plate of the L-shaped support plate (3).

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